tenma tsukasa and tenma saki (project sekai) drawn by qi7pi

1boy 1girl arm_up blazer blonde_hair brother_and_sister closed_eyes collared_shirt confetti diagonal-striped_clothes diagonal-striped_necktie double-parted_bangs hair_between_eyes hand_on_own_hip jacket kamiyama_high_school_uniform_(project_sekai) lapels layered_clothes layered_sleeves long_hair long_sleeves miyamasuzaka_girls'_academy_school_uniform neckerchief necktie notched_lapels notice_lines open_clothes open_collar open_hand open_jacket open_mouth outstretched_arm project_sekai qi7pi red_neckerchief sailor_collar school_uniform shirt short_hair siblings simple_background smile sparkle striped_clothes striped_necktie sweater tenma_saki tenma_tsukasa twintails upper_body v-neck white_background wing_collar